The boundary of the lawn in front of a building is represented by the parabola y=x^2/16+x-2
The parabola is represented on the coordinate plane.
The building's entrance is located at the parabola's focus, which has the coordinates
The lawn's gate is located at the parabola's vertex, which has the coordinates
The building's front wall is located along the directrix of the parabolic lawn area. The directrix of the parabola is